zad. 2
\frac{6}{8}=\frac{3}{4} skracam przez 2
\frac{2}{4}=\frac{1}{2}
\frac{3}{12}=\frac{1}{4}
\frac{3}{9}=\frac{1}{3}
\frac{4}{10}=\frac{2}{5}
\frac{6}{15}=\frac{2}{5}
\frac{4}{8}=\frac{1}{2}
\frac{10}{20}=\frac{1}{2}
\frac{2}{30}=\frac{1}{15}
\frac{15}{20}=\frac{3}{4}
\frac{21}{30}=\frac{7}{10}
\frac{10}{50}=\frac{1}{5}
zad. 3
\frac{48}{60}=\frac{24}{30}=\frac{12}{15}=\frac{4}{5}
\frac{54}{72}=\frac{27}{36}=\frac{9}{12}=\frac{3}{4}